Hitachi Breakthrough Technology Enables The Development Of
50TB Tape Media

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Hitachi Maxell, Ltd. and Tokyo Institute of Technology today jointly announced the collaboratively development of ultra high capacity tape media featuring a capacity of over 50 TB per standard tape cartridge.

This joint team demonstrated a world-record areal density
of 45.0 Gb/in2 in linear formatted perpendicular magnetic
recording media. This technology enables a capacity of more
than 50 TB per standard tape cartridge - 33 times larger
than the capacity of the latest available LTO Ultrium 5
data cartridges.

The coating type media, which is made by coating the
magnetic powder on the base film, is commonly used for
archive in public libraries, public records offices and the
long-term storage. In order to increase the capacity of
these type of media developers had to create an ultra-thin
film with magnetic particles sized below 10nm. This was
very difficult to achieve using coating methods.

Hitachi's super-high density nanometer-sized magnetic film
was developed by combining Maxell?s tape medium
design/evaluation technologies and a new thin-film
formation method (Facing Targets Sputtering method),
developed by associate professor Shigeki Nakagawa et al.in
the Tokyo Institute of Technology. The method
allowed Hitachi to make a large-capacity magnetic tape
with ultra-small magnetic particles (less than 10nm). As a
result, the areal recording density of the new tape medium
reached the 45.0 Gb/in2. Using this film in typical data
tape cartridge media offers a capacity of 50TB per
cartridge or even more.

Hitachi confirmed a linear recording density of 531 kbpi
and a track pitch of 300 nm without cross-track
interference using a newly designed tester.